ExoPlayer buildMediaSource Method

    @SuppressLint("SwitchIntDef")
    private MediaSource buildMediaSource(Uri uri, DefaultDataSource.Factory dataSourceFactory) {
        MediaItem mMediaItem = MediaItem.fromUri(Uri.parse(String.valueOf(uri)));
        int type = TextUtils.isEmpty(null) ? Util.inferContentType(uri) : Util.inferContentType("." + null);
        switch (type) {
            case C.TYPE_DASH:
                return new DashMediaSource.Factory(dataSourceFactory)
                        .createMediaSource(mMediaItem);
            case C.TYPE_HLS:
                return new HlsMediaSource.Factory(dataSourceFactory)
                        .setAllowChunklessPreparation(true)
                        .createMediaSource(mMediaItem);
            case C.TYPE_OTHER:
                if (uri.toString().contains(".m3u8")) {
                    return new HlsMediaSource.Factory(dataSourceFactory)
                            .setAllowChunklessPreparation(true)
                            .createMediaSource(mMediaItem);
                } else {
                    return new ProgressiveMediaSource.Factory(dataSourceFactory, new DefaultExtractorsFactory())
                            .createMediaSource(mMediaItem);
                }
            case C.TYPE_RTSP:
                return new RtspMediaSource.Factory()
                        .createMediaSource(MediaItem.fromUri(uri));
            default: {
                throw new IllegalStateException("Unsupported type: " + type);
            }
        }
    }